# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1372614798 -7200
# Node ID dc308a3033f3995f404ce05763b0a3171290d9f5
# Parent  ae718c3f3425c849391255fe2886509e07724bca
Fixed output related to "del" statement usage.

diff -r ae718c3f3425 -r dc308a3033f3 compiler/ast.py
--- a/compiler/ast.py	Wed May 01 23:23:54 2013 +0200
+++ b/compiler/ast.py	Sun Jun 30 19:53:18 2013 +0200
@@ -1,6 +1,6 @@
 """Python abstract syntax node definitions
 
-This file is automatically generated by Tools/compiler/astgen.py
+This file was originally generated by Tools/compiler/astgen.py
 """
 from compiler.consts import CO_VARARGS, CO_VARKEYWORDS
 
@@ -26,6 +26,18 @@
             l.append(elt)
     return l
 
+def flatten_assignment(node):
+    l = []
+    if isinstance(node, (AssList, AssTuple)):
+        for n in node.nodes:
+            l += flatten_assignment(n)
+    else:
+        l.append(node)
+    return l
+
+def is_deletion(node):
+    return isinstance(node, (AssAttr, AssName)) and node.flags == "OP_DELETE"
+
 def docstring(s):
     if s.find("\n") != -1:
         if s.find("'''") != -1:
@@ -248,7 +260,11 @@
         return "AssList(%r)" % (self.nodes,)
 
     def __str__(self):
-        return "[%s]" % ", ".join(map(str, self.nodes))
+        nodes = flatten_assignment(self)
+        if nodes and is_deletion(nodes[0]):
+            return "; ".join(map(str, self.nodes))
+        else:
+            return "[%s]" % ", ".join(map(str, self.nodes))
 
     def visit(self, visitor, *args):
         return visitor.visitAssList(self, *args)
@@ -296,7 +312,11 @@
         return "AssTuple(%r)" % (self.nodes,)
 
     def __str__(self):
-        return "(%s)" % ", ".join(map(str, self.nodes))
+        nodes = flatten_assignment(self)
+        if nodes and is_deletion(nodes[0]):
+            return "; ".join(map(str, self.nodes))
+        else:
+            return "(%s)" % ", ".join(map(str, self.nodes))
 
     def visit(self, visitor, *args):
         return visitor.visitAssTuple(self, *args)